Any hairline structural cracks sprawling or gaping fissures or chips should be addressed.
Tiling over concrete block wall.
Cinder block wall preparation first the cinder or concrete masonry unit block needs to be prepared correctly.
Things you ll need ph neutral cleaner sponge scrub brush 3 4 expanded metal lath 1 1 2 or 2 inch concrete nails hammer tin snips thinset mortar bucket notched trowel ceramic tiles tile spacers plywood board carpenter s level silicone caulking grout grout float lint free cloth.
You can get this from construction or hardware stores.
The safest way to approach questionable concrete is not to cover it over with cbus but to fix the concrete.
For tiling over tiles in bathroom walls you ll need to set up sheets of waterproof membrane in between the concrete wall and tiles.
Installing tile over concrete walls is possible but presents some unique challenges.
Id board it mate quicker and you can tile straight away.
Cracks and gaps can be filled with portland cement based fillers.
Ventilate and dehumidify the area before during and after the installation because basement walls are usually susceptible to moisture.
Tiles come in a variety of natural and man made materials and they make durable attractive surfaces for both walls and floors.
The key to a long lasting and attractive tile installation is proper substrate preparation.
A completed tile job is extremely heavy and requires a substrate sturdy enough to support the weight.